PHP

Topic: Variables

Explain the difference between $message and $$message.

$message is used to store variable data. 

$$message can be used to store variable of a variable. 

Data stored in $message is fixed while data stored in $$message can be changed dynamically.

 E.g. $var1 = ‘Variable 1’ $$var1= ‘variable2’. 

This can be interpreted as $ Variable 1=‘variable2’; 

For me to print value of both variables, I will write $var1 $($var1)

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